Basophils are the rarest type of white blood cell (WBC). Sometimes called granulocytes, the cells hold tiny granules full of histamine. Basophils can also trigger your allergic reaction.

which program our blood cells differently to form the different blood groups. If you have type AB blood, for example, your body is programmed to produce A and B antigens on red blood cells. A person ...

For example: There are also Rhesus (Rh) antigens, which determine if blood is "positive" or "negative." If you have Rh proteins on the surface of your red blood cells, you are Rh positive.

Doctors use blood tests to analyze substances like proteins, cells, or chemicals in your blood. This can give them a picture of your overall health and help them diagnose different diseases ...

Lymphoproliferative disorders are a group of diseases that cause an uncontrolled production of lymphocytes, a type of white blood cell. Examples include non-Hodgkin’s lymphoma and certain leukemias.